Geographical inhomogeneity and temporal variability of mixing property and driving mechanism in the Arctic Ocean
Upper ocean mixing plays a key role in the atmosphere-ocean heat transfer and sea ice extent and thickness via modulating the upper ocean temperatures in the Arctic Ocean. Observations of diffusivities in the Arctic that directly indicate the ocean mixing properties are sparse. Therefore, the spatio...
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/178623 2023-05-15T14:38:46+02:00 Geographical inhomogeneity and temporal variability of mixing property and driving mechanism in the Arctic Ocean You, Jia Xu, Zhenhua Robertson, Robin Li, Qun Yin, Baoshu 2022-03-25 http://ir.qdio.ac.cn/handle/337002/178623 https://doi.org/10.1007/s00343-021-1037-6 英语 eng SCIENCE PRESS JOURNAL OF OCEANOLOGY AND LIMNOLOGY http://ir.qdio.ac.cn/handle/337002/178623 doi:10.1007/s00343-021-1037-6 mixing the Arctic Ocean near-inertial waves stratification heat flux Marine & Freshwater Biology Oceanography Limnology INTERNAL WAVE-FIELD SEA-ICE LOSS CANADA BASIN VERTICAL DIFFUSION HEAT FLUXES TIDES HALOCLINE WIND DISSIPATION BEAUFORT 期刊论文 2022 ftchinacasciocas https://doi.org/10.1007/s00343-021-1037-6 2022-07-29T12:11:41Z Upper ocean mixing plays a key role in the atmosphere-ocean heat transfer and sea ice extent and thickness via modulating the upper ocean temperatures in the Arctic Ocean. Observations of diffusivities in the Arctic that directly indicate the ocean mixing properties are sparse. Therefore, the spatiotemporal pattern and magnitude of diapycnal diffusivities and kinetic energy dissipation rates in the upper Arctic Ocean are important for atmosphere-ocean heat transfers and sea ice changes. These were first estimated from the Ice-Tethered Profilers dataset (2005-2019) using a strain-based fine-scale parameterization. The resultant mixing properties showed significant geographical inhomogeneity and temporal variability. Diapycnal diffusivities and dissipation rates in the Atlantic sector of the Arctic Ocean were stronger than those on the Pacific side. Mixing in the Atlantic sector increased significantly during the observation period; whereas in the Pacific sector, it weakened before 2011 and then strengthened. Potential impact factors include wind, sea ice, near inertial waves, and stratification, while their relative contributions vary between the two sectors of the Arctic Ocean. In the Atlantic sector, turbulent mixing dominated, while in the Pacific sector, turbulent mixing was inhibited by strong stratification prior to 2011, and is able to overcome the stratification gradually after 2014. The vertical turbulent heat flux constantly increased in the Atlantic sector year by year, while it decreased in the Pacific sector post 2010. The estimated heat flux variability induced by enhanced turbulent mixing is expected to continue to diminish sea ice in the near future. Report Arctic Arctic Ocean canada basin Sea ice Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Arctic Arctic Ocean Canada Pacific Journal of Oceanology and Limnology 40 3 846 869 |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
mixing the Arctic Ocean near-inertial waves stratification heat flux Marine & Freshwater Biology Oceanography Limnology INTERNAL WAVE-FIELD SEA-ICE LOSS CANADA BASIN VERTICAL DIFFUSION HEAT FLUXES TIDES HALOCLINE WIND DISSIPATION BEAUFORT |
spellingShingle |
mixing the Arctic Ocean near-inertial waves stratification heat flux Marine & Freshwater Biology Oceanography Limnology INTERNAL WAVE-FIELD SEA-ICE LOSS CANADA BASIN VERTICAL DIFFUSION HEAT FLUXES TIDES HALOCLINE WIND DISSIPATION BEAUFORT You, Jia Xu, Zhenhua Robertson, Robin Li, Qun Yin, Baoshu Geographical inhomogeneity and temporal variability of mixing property and driving mechanism in the Arctic Ocean |
topic_facet |
mixing the Arctic Ocean near-inertial waves stratification heat flux Marine & Freshwater Biology Oceanography Limnology INTERNAL WAVE-FIELD SEA-ICE LOSS CANADA BASIN VERTICAL DIFFUSION HEAT FLUXES TIDES HALOCLINE WIND DISSIPATION BEAUFORT |
description |
Upper ocean mixing plays a key role in the atmosphere-ocean heat transfer and sea ice extent and thickness via modulating the upper ocean temperatures in the Arctic Ocean. Observations of diffusivities in the Arctic that directly indicate the ocean mixing properties are sparse. Therefore, the spatiotemporal pattern and magnitude of diapycnal diffusivities and kinetic energy dissipation rates in the upper Arctic Ocean are important for atmosphere-ocean heat transfers and sea ice changes. These were first estimated from the Ice-Tethered Profilers dataset (2005-2019) using a strain-based fine-scale parameterization. The resultant mixing properties showed significant geographical inhomogeneity and temporal variability. Diapycnal diffusivities and dissipation rates in the Atlantic sector of the Arctic Ocean were stronger than those on the Pacific side. Mixing in the Atlantic sector increased significantly during the observation period; whereas in the Pacific sector, it weakened before 2011 and then strengthened. Potential impact factors include wind, sea ice, near inertial waves, and stratification, while their relative contributions vary between the two sectors of the Arctic Ocean. In the Atlantic sector, turbulent mixing dominated, while in the Pacific sector, turbulent mixing was inhibited by strong stratification prior to 2011, and is able to overcome the stratification gradually after 2014. The vertical turbulent heat flux constantly increased in the Atlantic sector year by year, while it decreased in the Pacific sector post 2010. The estimated heat flux variability induced by enhanced turbulent mixing is expected to continue to diminish sea ice in the near future. |
format |
Report |
author |
You, Jia Xu, Zhenhua Robertson, Robin Li, Qun Yin, Baoshu |
author_facet |
You, Jia Xu, Zhenhua Robertson, Robin Li, Qun Yin, Baoshu |
author_sort |
You, Jia |
title |
Geographical inhomogeneity and temporal variability of mixing property and driving mechanism in the Arctic Ocean |
title_short |
Geographical inhomogeneity and temporal variability of mixing property and driving mechanism in the Arctic Ocean |
title_full |
Geographical inhomogeneity and temporal variability of mixing property and driving mechanism in the Arctic Ocean |
title_fullStr |
Geographical inhomogeneity and temporal variability of mixing property and driving mechanism in the Arctic Ocean |
title_full_unstemmed |
Geographical inhomogeneity and temporal variability of mixing property and driving mechanism in the Arctic Ocean |
title_sort |
geographical inhomogeneity and temporal variability of mixing property and driving mechanism in the arctic ocean |
publisher |
SCIENCE PRESS |
publishDate |
2022 |
url |
http://ir.qdio.ac.cn/handle/337002/178623 https://doi.org/10.1007/s00343-021-1037-6 |
geographic |
Arctic Arctic Ocean Canada Pacific |
geographic_facet |
Arctic Arctic Ocean Canada Pacific |
genre |
Arctic Arctic Ocean canada basin Sea ice |
genre_facet |
Arctic Arctic Ocean canada basin Sea ice |
op_relation |
JOURNAL OF OCEANOLOGY AND LIMNOLOGY http://ir.qdio.ac.cn/handle/337002/178623 doi:10.1007/s00343-021-1037-6 |
op_doi |
https://doi.org/10.1007/s00343-021-1037-6 |
container_title |
Journal of Oceanology and Limnology |
container_volume |
40 |
container_issue |
3 |
container_start_page |
846 |
op_container_end_page |
869 |
_version_ |
1766310792050769920 |